Not only is the 97% figure correct for Mac users not using any kind of pro apps (give or take a %), it’s also true with Windows as well. Intel primarily sells midrange laptop cpus and a bulk of their money comes from server cpus. High end desktop cpu sales are a rounding error to intel. 65% of computers sold don’t even have discrete graphics from AMD or Nvidia.
Oh, for sure if we're talking about market in total. I mean, how many Wintel boxes are point of sales terminals or just filling rows of cubicles.
I guess my point is that there was a time when Macs had a relatively high percentage use by creative pros, in multiple fields (not just video editing). So, in comparison to the Wintel market, a higher percentage were pro-use in Macs, which kind of leveled the playing field more in terms of which platform apps might target.
For example, when I started in 3D work, you pretty much used a Mac if you did anything high-end. There were some PC apps, but mostly in architectural visualization and stuff like that, and the output wasn't that great. Hollywood, was almost all Mac. If you were making a new 3D app, you likely targeted the Mac first.
Similar, for professional CAD that wasn't AutoCAD or super-high end. Some of the first 3D solids modeling CAD that didn't cost a small fortune was on the Mac. Form*Z, Ashlar's Vellum Solids and Cobalt, etc. (PC had stuff like SolidWorks and Catia, but that wasn't touchable unless you were pretty big.)
I could tell a bit of a story there, actually... as I was working with an ID firm and needing real 3D solids CAD. I called Ashlar, as they had the closest to what I was looking for, but it wasn't quite there. The guy I was talking to said... hey, do you want to talk to the dev of something we're working on? I was like... SURE! So, I end up on the phone with Tim Olson (currently ViaCAD, SharkCAD) and he's telling me about something they are just moving from alpha to beta on and wondering if I'd want to start testing it. I'm like... Yeah!
Tim had come out of Lockheed (SR-71 kind of stuff, aerospace CAD) and was putting a new kind of interface on their CAD software on a new engine (Spatial SAT). The kind of drawing assist tools and stuff you more commonly see in better CAD stuff largely came from his work. I and people from Scaled Composites (Burt Rutan, Voyager fame), and some yacht racing designers and stuff were in those early betas and forums. Fun stuff.
Same in 3D rendering. There were people in the forums like Alex Lindsay and even a couple times, John Knoll (ILM Rebel Unit)... people working on the Matrix, etc.
The Mac was THE place to be for this stuff. The PC AutoCAD/3DS Max people were jealous of the stuff we were doing. My how the tables have turned.
Yes, the more complex the app, the more likely a developer will rely on other developers, i.e. third-party frameworks, libraries, etc. However, that doesn't absolutely equate to a lower probability of porting, maybe just more patience necessary.
Yeah, the patience part is what has me concerned.

But, yes, I suppose if there is a big enough market, the devs will come. However, some of these bigger companies also have a level of bias, just like a lot of IT departments. There is more than just market and money involved, unfortunately.
Admittedly, Web apps aren't viable for everything, however, there are a lot/plenty of feasible use cases.
Yeah, though aside from the brute need for compatibility, I don't like most of them very much. I guess it is better than nothing, but many of the web-apps in a wrapper are always a bit flaky and often have UI issues (I use several, like Slack, Todoist, etc.)
Not really. For example, there's a videographer with an iMac. The preview of the film changes probably updates in a matter of seconds, however, the final rendering requires minutes, maybe even a couple of hours. During you're able and will move to another task, whether on your Mac or not.
Oh, absolutely, it is doable these days, often even on lower end machines. Then you spend $ to get it done more quickly (to make more $).
The problem is more thermals and damage to equipment. I get that if a rendering takes 24 hours, I can spend $ to make that into 10 hours, etc. But, if the 24 hours damages my system, then I almost have to try and go for that higher cost system, even if doesn't balance out with income side of things.
In the PC market, I can build a machine closer to the cost of a base Mac that can handle the thermals, AND spend more money for higher quality, or higher performance systems. The range is available. Apple has nothing under the cost of an iMac Pro.
I make do with my mini, and have my fingers crossed that by moving the GPU out, maybe my luck will be better (than it had been with MBPs). We'll see. But even then, it would be *nice* to have less noise when I push it. If it were a bit bigger, or an xMac, that probably wouldn't be an issue.
Huh? There are at most 5 but realistically 3 new models of iPhone, and three models of Mac laptops.
Yes, they have narrowed down the lines recently. It was more not long ago (especially if you included the year's old models they were selling for more entry-level models).